In this episode of the Fret Files Podcast, Eric and Nat talk about what's new in Eric's repair shop, followed by a guitar history segment about Kay guitars. Then come the questions regarding filling in ugly inlays, neck heating irons, drop fill finish touch ups, what to do with a truss rod that won't tighten anymore, and a discussion about why guitars necks got thinner and narrower in the late 60's and early 70's.